Nonisolatedhighgainhybridswitched-inductorDC-DC converterwithcommonswitchgrounding

Abstract

This paper present same thodology that integrates the hybrid switched induc tor (HSL)and split duty ratio techniques to synthesize a high gain converter with common switch grounding(HSL-CSG).The DC-DC converter's high gain feature is required for micro source power processing In low voltage renewable energy systems. The amplification in voltage gain of the proposed converter is achieved without using transformer,common corecoupled inductors, voltage multipliers, intermediate capacitors, and voltage lifting methods so that the topology is simple in construction and operation.More over,with a split duty ratio the proposed converter switches are less prone to current stress due to reduction in extreme conducting duty intervals. The topological derivation, operating principle,analysisofbothcontinuousconductionmode(CCM),and discontinuous conductionmode(DCM)arepresented.Thetheoreticalanalysis is validated with the aid of a laboratory prototype.